Hello,
is your device attached to a Raid controller? In that case move it to a Scsi controller and verfiy results
(title) How to troubleshoot issues with a Robotic Library or Tape Drive in Backup Exec 9.x and 10.x
http://support.veritas.com/docs/255501
Check if your device is tested by Veritas . If it is tested then install the latest Veritas drivers
(TITLE) Backup Exec 9.x for Windows Servers Robotic Library Hardware Compatibility List (HCL) (includes tested drives)
http://support.veritas.com/docs/271383
(TITLE) Backup Exec 9.x for Windows Servers Standalone Drives Hardware Compatibility List (HCL)
http://support.veritas.com/docs/271382
(TITLE) VERITAS Backup Exec (tm) 9.1 - Device Driver Installer (20050115) - Includes Tape Driver Release (20041231) and Robotic Library Release (45) (Intel Only
http://support.veritas.com/docs/273853
IF the device is compatible then install OEM drivers
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